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koffice/lib/kross/ruby/rubyextension.cpp

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12 KiB

/***************************************************************************
* rubyinterpreter.cpp
* This file is part of the KDE project
* copyright (C)2005 by Cyrille Berger (cberger@cberger.net)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
***************************************************************************/
#include "rubyextension.h"
#include <st.h>
#include <tqmap.h>
#include <tqstring.h>
#include "api/list.h"
#include "rubyconfig.h"
namespace Kross {
namespace Ruby {
class RubyExtensionPrivate {
friend class RubyExtension;
/// The \a Kross::Api::Object this RubyExtension wraps.
Kross::Api::Object::Ptr m_object;
///
static VALUE s_krossObject;
static VALUE s_krossException;
};
VALUE RubyExtensionPrivate::s_krossObject = 0;
VALUE RubyExtensionPrivate::s_krossException = 0;
VALUE RubyExtension::method_missing(int argc, VALUE *argv, VALUE self)
{
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug("method_missing(argc, argv, self)");
#endif
if(argc < 1)
{
return 0;
}
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug("Converting self to Kross::Api::Object");
#endif
Kross::Api::Object::Ptr object = toObject( self );
return RubyExtension::call_method(object, argc, argv);
}
VALUE RubyExtension::call_method( Kross::Api::Object::Ptr object, int argc, VALUE *argv)
{
TQString funcname = rb_id2name(SYM2ID(argv[0]));
TQValueList<Api::Object::Ptr> argsList;
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug(TQString("Building arguments list for function: %1 there are %2 arguments.").tqarg(funcname).tqarg(argc-1));
#endif
for(int i = 1; i < argc; i++)
{
Kross::Api::Object::Ptr obj = toObject(argv[i]);
if(obj) argsList.append(obj);
}
Kross::Api::Object::Ptr result;
try { // We need a double try/catch because, the cleaning is only done at the end of the catch, so if we had only one try/catch, kross would crash after the call to rb_exc_raise
try { // We can't let a C++ exceptions propagate in the C mechanism
Kross::Api::Callable* callable = dynamic_cast<Kross::Api::Callable*>(object.data());
if(callable && callable->hasChild(funcname)) {
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug( TQString("Kross::Ruby::RubyExtension::method_missing name='%1' is a child object of '%2'.").tqarg(funcname).tqarg(object->getName()) );
#endif
result = callable->getChild(funcname)->call(TQString(), new Api::List(argsList));
}
else {
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug( TQString("Kross::Ruby::RubyExtension::method_missing try to call function with name '%1' in object '%2'.").tqarg(funcname).tqarg(object->getName()) );
#endif
result = object->call(funcname, new Api::List(argsList));
}
} catch(Kross::Api::Exception::Ptr exception)
{
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug("c++ exception catched, raise a ruby error");
#endif
throw convertFromException(exception);
} catch(...)
{
throw convertFromException(new Kross::Api::Exception( "Unknow error" )); // TODO: fix //i18n
}
} catch(VALUE v) {
rb_exc_raise(v );
}
return toVALUE(result);
}
void RubyExtension::delete_object(void* object)
{
krossdebug("delete_object");
RubyExtension* obj = static_cast<RubyExtension*>(object);
if(obj)
delete obj;
}
void RubyExtension::delete_exception(void* object)
{
Kross::Api::Exception* exc = static_cast<Kross::Api::Exception*>(object);
exc->_KShared_unref();
}
RubyExtension::RubyExtension(Kross::Api::Object::Ptr object) : d(new RubyExtensionPrivate())
{
d->m_object = object;
}
RubyExtension::~RubyExtension()
{
krossdebug("Delete RubyExtension");
delete d;
}
typedef TQMap<TQString, Kross::Api::Object::Ptr> mStrObj;
int RubyExtension::convertHash_i(VALUE key, VALUE value, VALUE vmap)
{
TQMap<TQString, Kross::Api::Object::Ptr>* map;
Data_Get_Struct(vmap, mStrObj, map);
if (key != Qundef)
{
Kross::Api::Object::Ptr o = RubyExtension::toObject( value );
if(o) map->replace(STR2CSTR(key), o);
}
return ST_CONTINUE;
}
bool RubyExtension::isOfExceptionType(VALUE value)
{
VALUE result = rb_funcall(value, rb_intern("kind_of?"), 1, RubyExtensionPrivate::s_krossException );
return (TYPE(result) == T_TRUE);
}
bool RubyExtension::isOfObjectType(VALUE value)
{
VALUE result = rb_funcall(value, rb_intern("kind_of?"), 1, RubyExtensionPrivate::s_krossObject );
return (TYPE(result) == T_TRUE);
}
Kross::Api::Exception::Ptr RubyExtension::convertToException(VALUE value)
{
if( isOfExceptionType(value) )
{
Kross::Api::Exception* exception;
Data_Get_Struct(value, Kross::Api::Exception, exception);
return exception;
}
return 0;
}
VALUE RubyExtension::convertFromException(Kross::Api::Exception::Ptr exc)
{
if(RubyExtensionPrivate::s_krossException == 0)
{
RubyExtensionPrivate::s_krossException = rb_define_class("KrossException", rb_eRuntimeError);
}
exc->_KShared_ref();
return Data_Wrap_Struct(RubyExtensionPrivate::s_krossException, 0, RubyExtension::delete_exception, exc.data() );
}
Kross::Api::Object::Ptr RubyExtension::toObject(VALUE value)
{
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug(TQString("RubyExtension::toObject of type %1").tqarg(TYPE(value)));
#endif
switch( TYPE( value ) )
{
case T_DATA:
{
#ifdef KROSS_RUBY_EXTENSION_DEBUG
krossdebug("Object is a Kross Object");
#endif
if( isOfObjectType(value) )
{
RubyExtension* objectExtension;
Data_Get_Struct(value, RubyExtension, objectExtension);
Kross::Api::Object::Ptr object = objectExtension->d->m_object;
return object;
} else {
krosswarning("Cannot yet convert standard ruby type to kross object");
return 0;
}
}
case T_FLOAT:
return new Kross::Api::Variant(NUM2DBL(value));
case T_STRING:
return new Kross::Api::Variant(TQString(STR2CSTR(value)));
case T_ARRAY:
{
TQValueList<Kross::Api::Object::Ptr> l;
for(int i = 0; i < RARRAY(value)->len; i++)
{
Kross::Api::Object::Ptr o = toObject( rb_ary_entry( value , i ) );
if(o) l.append(o);
}
return new Kross::Api::List(l);
}
case T_FIXNUM:
return new Kross::Api::Variant((TQ_LLONG)FIX2INT(value));
case T_HASH:
{
TQMap<TQString, Kross::Api::Object::Ptr> map;
VALUE vmap = Data_Wrap_Struct(rb_cObject, 0,0, &map);
rb_hash_foreach(value, (int (*)(...))convertHash_i, vmap);
return new Kross::Api::Dict(map);
}
case T_BIGNUM:
{
return new Kross::Api::Variant((TQ_LLONG)NUM2LONG(value));
}
case T_TRUE:
{
return new Kross::Api::Variant(true);
}
case T_FALSE:
{
return new Kross::Api::Variant(false);
}
case T_SYMBOL:
{
return new Kross::Api::Variant(TQString(rb_id2name(SYM2ID(value))));
}
case T_MATCH:
case T_OBJECT:
case T_FILE:
case T_STRUCT:
case T_REGEXP:
case T_MODULE:
case T_ICLASS:
case T_CLASS:
krosswarning(TQString("This ruby type '%1' cannot be converted to a Kross::Api::Object").tqarg(TYPE(value)));
default:
case T_NIL:
return 0;
}
}
VALUE RubyExtension::toVALUE(const TQString& s)
{
return s.isNull() ? rb_str_new2("") : rb_str_new2(s.latin1());
}
VALUE RubyExtension::toVALUE(TQStringList list)
{
VALUE l = rb_ary_new();
for(TQStringList::ConstIterator it = list.constBegin(); it != list.constEnd(); ++it)
rb_ary_push(l, toVALUE(*it));
return l;
}
VALUE RubyExtension::toVALUE(TQMap<TQString, TQVariant> map)
{
VALUE h = rb_hash_new();
for(TQMap<TQString, TQVariant>::Iterator it = map.begin(); it != map.end(); ++it)
rb_hash_aset(h, toVALUE(it.key()), toVALUE(it.data()) );
return h;
}
VALUE RubyExtension::toVALUE(TQValueList<TQVariant> list)
{
VALUE l = rb_ary_new();
for(TQValueList<TQVariant>::Iterator it = list.begin(); it != list.end(); ++it)
rb_ary_push(l, toVALUE(*it));
return l;
}
VALUE RubyExtension::toVALUE(const TQVariant& variant)
{
switch(variant.type()) {
case TQVariant::Invalid:
return Qnil;
case TQVariant::Bool:
return (variant.toBool()) ? Qtrue : Qfalse;
case TQVariant::Int:
return INT2FIX(variant.toInt());
case TQVariant::UInt:
return UINT2NUM(variant.toUInt());
case TQVariant::Double:
return rb_float_new(variant.toDouble());
case TQVariant::Date:
case TQVariant::Time:
case TQVariant::DateTime:
case TQVariant::ByteArray:
case TQVariant::BitArray:
case TQVariant::CString:
case TQVariant::String:
return toVALUE(variant.toString());
case TQVariant::StringList:
return toVALUE(variant.toStringList());
case TQVariant::Map:
return toVALUE(variant.toMap());
case TQVariant::List:
return toVALUE(variant.toList());
// To handle following both cases is a bit difficult
// cause Python doesn't spend an easy possibility
// for such large numbers (TODO maybe BigInt?). So,
// we risk overflows here, but well...
case TQVariant::LongLong: {
return INT2NUM((long)variant.toLongLong());
}
case TQVariant::ULongLong:
return UINT2NUM((unsigned long)variant.toULongLong());
default: {
krosswarning( TQString("Kross::Ruby::RubyExtension::toVALUE(TQVariant) Not possible to convert the TQVariant type '%1' to a VALUE.").tqarg(variant.typeName()) );
return Qundef;
}
}
}
VALUE RubyExtension::toVALUE(Kross::Api::Object::Ptr object)
{
if(! object.data()) {
return 0;
}
if(object->getClassName() == "Kross::Api::Variant") {
TQVariant v = static_cast<Kross::Api::Variant*>( object.data() )->getValue();
return toVALUE(v);
}
if(object->getClassName() == "Kross::Api::List") {
Kross::Api::List* list = static_cast<Kross::Api::List*>( object.data() );
return toVALUE((Kross::Api::List::Ptr)list);
}
if(object->getClassName() == "Kross::Api::Dict") {
Kross::Api::Dict* dict = static_cast<Kross::Api::Dict*>( object.data() );
return toVALUE((Kross::Api::Dict::Ptr)dict);
}
if(RubyExtensionPrivate::s_krossObject == 0)
{
RubyExtensionPrivate::s_krossObject = rb_define_class("KrossObject", rb_cObject);
rb_define_method(RubyExtensionPrivate::s_krossObject, "method_missing", (VALUE (*)(...))RubyExtension::method_missing, -1);
}
return Data_Wrap_Struct(RubyExtensionPrivate::s_krossObject, 0, RubyExtension::delete_object, new RubyExtension(object) );
}
VALUE RubyExtension::toVALUE(Kross::Api::List::Ptr list)
{
VALUE l = rb_ary_new();
uint count = list ? list->count() : 0;
for(uint i = 0; i < count; i++)
rb_ary_push(l, toVALUE(list->item(i)));
return l;
}
}
}